Posted in Admin's blog Ham Radio

Antenna rotor clean up

Some months ago I’ve received from the local A.R.I. radio club an old antenna rotor. I think it is a Daiwa but there is no…

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Posted in Admin's blog Ham Radio

Mosley TA-33-JRN

I’m an ham radio operator since year 2008. I’ve started this hobby with simple and relatively cheap equipment: an FT757GX transceiver and a long wire…

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Posted in Admin's blog High Voltage Schematics & Homebrew

High voltage generation from 3.3-5V

This post describes my standard DC-DC HV converter You know, to power up geiger tubes or photomultipliers there the need of high voltage at very…

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Posted in Admin's blog Ham Radio

PRC320 power supply repair

My military HF manpack radio PRC320, 3 months after I’ve bought it, started to make a whistle and was not able to tune on any…

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Posted in Admin's blog

Software

This is the latest Free Version of Ham Radio Deluxe 5.0.2893 compiled by Simon Brown. Download here HRD_5.0.2893 Borland Turbo C 2.01 original (3 floppy)…

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Autunite specimen from China

Recently I’ve bought a little specimen of Autunite from China. My sample is 20mm in lenght, 15mm width and 6mm thick with nice green lamellar…

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Posted in Admin's blog

NER10 X-Ray generator

I’ve bough from eBay a NER10 X-Ray generator tube. It was build in 1925-1930 I don’t know exactly when. It’s interesting to see how well…

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Posted in Admin's blog

PRT-E750W & PRT-E1500W vfd settings

How to set correctly the PRT-E750W and PRT-E1500W  (are equals except for the power capability) VFD supplied with CNC 3020 and CNC 6040 chinese routers….

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Radioactive sources

This is my actual collection of radioactive sources. Thorium Kodak lens Kodak had made some 35mm analog film models of cameras (1950-1970) like Retina IIIc,…

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Posted in Admin's blog

Schematics/Gerber

MadEXP PMT Adapter v2.0 schematic/gerber files plus license. Click on the link to download. MadExp PMT MadEXP PMT Adapter v2.5 schematic/gerber files plus license. Click…

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